Tony Stark arrives in Japan with the aim of setting up the Arc Station in the first step in his World Peace Initiative. In front of all of Japan, he announces his new Iron Man model, Iron Man Dio, with himself in the pilot's seat. But during the demo, Dio crashes after a mysterious bug in the operating system.

Tony Stark learns the shocking truth behind Zodiac. Iron Man must muster all his remaining strength in order to stop the nefarious ambitions of his greatest adversary, the man behind Zodiac. But, when an familiar face enters the battlefield, will he be able to do what needs to be done?